Change test threshold to ensure pass
Change test threshold to ensure pass

nightkid1027/kafka-net,gigya/KafkaNetClient,bridgewell/kafka-net,martijnhoekstra/kafka-net,Jroland/kafka-net,BDeus/KafkaNetClient,CenturyLinkCloud/kafka-net,EranOfer/KafkaNetClient,PKRoma/kafka-net,geffzhang/kafka-net